III.I
LIFTING GEARS CAUTION
Heavy parts (25 kg or more) must be lifted with a hoist etc.
CAUTION If a part cannot be smoothly removed from the machine by hoisting, the following checks should be made: Check for removal of all bolts fastening the part to the relative parts. Check for existence of another part causing interface with the part to be removed.
WIRE ROPES Use adequate ropes depending on the weight of parts to be hoisted, referring to the table below:
z
Wire popes (Standard "Z" or "S" twist ropes without galvanizing) Rope diameter [mm]
10,0
11,2
12,5
14,0
16,0
18,0
20,0
22,4
30,0
40,0
50,0
60,0
Allowable load [tons]
1,0
1,4
1,6
2,2
2,8
3,6
4,4
5,6
10,0
18,0
28,0
40,0
CAUTION The allowable load value is estimated to be 1/6 or 1/7 of the breaking strength of the rope used.
z
Sling wire ropes from the middle portion of the hook. Slinging near the edge of the hook may cause the rope to slip off the hook during hoisting, and a serious accident can result. Hooks have maximum strength at the middle portion.
z
Do not sling a heavy load with one rope alone, but sling with two or more ropes symmetrically wound on to the load.
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